cashu-protocol

The Cashu ecash protocol uses blind signatures to mint ecash tokens privately, while keyset rotations manage mint key lifecycle and transitions. This Skill explains the cryptographic rationale and design choices behind these mechanisms using official NUT references.

To implement minting, swapping, and melting in a Cashu wallet, follow the protocol flows defined in the official NUT specifications. This Skill maps these real-world scenarios to exact NUT sections, providing grounded guidance for extending or debugging wallet services.

Cashu NUT specifications are the protocol's technical standards defining ecash operations and spending conditions. This Skill includes a parse-nut tool to extract exact sections from references, ensuring precise citation when explaining or implementing Cashu concepts.

The Cashu protocol uses ecash to enable instant, private, and offline-capable transactions through blind signatures, while spending conditions add programmable constraints. This Skill details the reasoning behind these design choices over traditional payment approaches.

Yes, you can use this Skill to debug spending conditions in custom Cashu mint implementations by referencing the official NUT documents. It grounds troubleshooting and extension guidance in the protocol's reference files to resolve mint and wallet issues.

The Cashu ecash protocol relies on mint trust for keyset management and blind signature issuance, meaning mints can theoretically re-mint tokens. This Skill explains these design trade-offs and protocol limitations by citing the relevant NUT specifications.